Mercurial > sdl-ios-xcode
annotate docs/html/sdldestroymutex.html @ 883:50f5a29c6a17
Date: Sat, 10 Apr 2004 02:25:33 -0400
From: Glenn Maynard
To: sdl@libsdl.org
Subject: [SDL] SDL_SetVideoMode() failing and not setting an error (patch)
Running an OpenGL SDL application off 1.2.7, at SDL_InitSubSystem(SDL_INIT_VIDEO) time:
Warning: Unable to initialize AAlib mouseUsing AAlib driver: Slang driver 1.0 (slang)
SDL_SetVideoMode then fails; SDL_GetError() returns "".
The installation problem is straightforward: X (the higher priority
driver) isn't running, so SDL is falling back on aalib. However,
no error is being set when aalib fails to initialize. This also
happens with the svgalib driver.
SDL_video.c line ~653 sets mode to NULL, since aalib didn't return an
OpenGL surface. Line ~711 ("failed setting a video mode") returns NULL.
The attached patch sets an error. It's a horrible, useless error
message--it should really say eg. "aalib does not support OpenGL"; this
should probably be done earlier in the individual drivers, too.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 11 Apr 2004 19:54:40 +0000 |
parents | 355632dca928 |
children |
rev | line source |
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0 | 1 <HTML |
2 ><HEAD | |
3 ><TITLE | |
4 >SDL_DestroyMutex</TITLE | |
5 ><META | |
6 NAME="GENERATOR" | |
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7 CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ |
0 | 8 "><LINK |
9 REL="HOME" | |
10 TITLE="SDL Library Documentation" | |
11 HREF="index.html"><LINK | |
12 REL="UP" | |
13 TITLE="Multi-threaded Programming" | |
14 HREF="thread.html"><LINK | |
15 REL="PREVIOUS" | |
16 TITLE="SDL_CreateMutex" | |
17 HREF="sdlcreatemutex.html"><LINK | |
18 REL="NEXT" | |
19 TITLE="SDL_mutexP" | |
20 HREF="sdlmutexp.html"></HEAD | |
21 ><BODY | |
22 CLASS="REFENTRY" | |
23 BGCOLOR="#FFF8DC" | |
24 TEXT="#000000" | |
25 LINK="#0000ee" | |
26 VLINK="#551a8b" | |
27 ALINK="#ff0000" | |
28 ><DIV | |
29 CLASS="NAVHEADER" | |
30 ><TABLE | |
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31 SUMMARY="Header navigation table" |
0 | 32 WIDTH="100%" |
33 BORDER="0" | |
34 CELLPADDING="0" | |
35 CELLSPACING="0" | |
36 ><TR | |
37 ><TH | |
38 COLSPAN="3" | |
39 ALIGN="center" | |
40 >SDL Library Documentation</TH | |
41 ></TR | |
42 ><TR | |
43 ><TD | |
44 WIDTH="10%" | |
45 ALIGN="left" | |
46 VALIGN="bottom" | |
47 ><A | |
48 HREF="sdlcreatemutex.html" | |
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49 ACCESSKEY="P" |
0 | 50 >Prev</A |
51 ></TD | |
52 ><TD | |
53 WIDTH="80%" | |
54 ALIGN="center" | |
55 VALIGN="bottom" | |
56 ></TD | |
57 ><TD | |
58 WIDTH="10%" | |
59 ALIGN="right" | |
60 VALIGN="bottom" | |
61 ><A | |
62 HREF="sdlmutexp.html" | |
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63 ACCESSKEY="N" |
0 | 64 >Next</A |
65 ></TD | |
66 ></TR | |
67 ></TABLE | |
68 ><HR | |
69 ALIGN="LEFT" | |
70 WIDTH="100%"></DIV | |
71 ><H1 | |
72 ><A | |
73 NAME="SDLDESTROYMUTEX" | |
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74 ></A |
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75 >SDL_DestroyMutex</H1 |
0 | 76 ><DIV |
77 CLASS="REFNAMEDIV" | |
78 ><A | |
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79 NAME="AEN7849" |
0 | 80 ></A |
81 ><H2 | |
82 >Name</H2 | |
83 >SDL_DestroyMutex -- Destroy a mutex</DIV | |
84 ><DIV | |
85 CLASS="REFSYNOPSISDIV" | |
86 ><A | |
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87 NAME="AEN7852" |
0 | 88 ></A |
89 ><H2 | |
90 >Synopsis</H2 | |
91 ><DIV | |
92 CLASS="FUNCSYNOPSIS" | |
93 ><A | |
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94 NAME="AEN7853" |
0 | 95 ></A |
96 ><P | |
97 ></P | |
98 ><PRE | |
99 CLASS="FUNCSYNOPSISINFO" | |
100 >#include "SDL.h" | |
101 #include "SDL_thread.h"</PRE | |
102 ><P | |
103 ><CODE | |
104 ><CODE | |
105 CLASS="FUNCDEF" | |
106 >void <B | |
107 CLASS="FSFUNC" | |
108 >SDL_DestroyMutex</B | |
109 ></CODE | |
110 >(SDL_mutex *mutex);</CODE | |
111 ></P | |
112 ><P | |
113 ></P | |
114 ></DIV | |
115 ></DIV | |
116 ><DIV | |
117 CLASS="REFSECT1" | |
118 ><A | |
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119 NAME="AEN7859" |
0 | 120 ></A |
121 ><H2 | |
122 >Description</H2 | |
123 ><P | |
124 >Destroy a previously <A | |
125 HREF="sdlcreatemutex.html" | |
126 >created</A | |
127 > mutex.</P | |
128 ></DIV | |
129 ><DIV | |
130 CLASS="REFSECT1" | |
131 ><A | |
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132 NAME="AEN7863" |
0 | 133 ></A |
134 ><H2 | |
135 >See Also</H2 | |
136 ><P | |
137 ><A | |
138 HREF="sdlcreatemutex.html" | |
139 ><TT | |
140 CLASS="FUNCTION" | |
141 >SDL_CreateMutex</TT | |
142 ></A | |
143 ></P | |
144 ></DIV | |
145 ><DIV | |
146 CLASS="NAVFOOTER" | |
147 ><HR | |
148 ALIGN="LEFT" | |
149 WIDTH="100%"><TABLE | |
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150 SUMMARY="Footer navigation table" |
0 | 151 WIDTH="100%" |
152 BORDER="0" | |
153 CELLPADDING="0" | |
154 CELLSPACING="0" | |
155 ><TR | |
156 ><TD | |
157 WIDTH="33%" | |
158 ALIGN="left" | |
159 VALIGN="top" | |
160 ><A | |
161 HREF="sdlcreatemutex.html" | |
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162 ACCESSKEY="P" |
0 | 163 >Prev</A |
164 ></TD | |
165 ><TD | |
166 WIDTH="34%" | |
167 ALIGN="center" | |
168 VALIGN="top" | |
169 ><A | |
170 HREF="index.html" | |
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171 ACCESSKEY="H" |
0 | 172 >Home</A |
173 ></TD | |
174 ><TD | |
175 WIDTH="33%" | |
176 ALIGN="right" | |
177 VALIGN="top" | |
178 ><A | |
179 HREF="sdlmutexp.html" | |
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180 ACCESSKEY="N" |
0 | 181 >Next</A |
182 ></TD | |
183 ></TR | |
184 ><TR | |
185 ><TD | |
186 WIDTH="33%" | |
187 ALIGN="left" | |
188 VALIGN="top" | |
189 >SDL_CreateMutex</TD | |
190 ><TD | |
191 WIDTH="34%" | |
192 ALIGN="center" | |
193 VALIGN="top" | |
194 ><A | |
195 HREF="thread.html" | |
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196 ACCESSKEY="U" |
0 | 197 >Up</A |
198 ></TD | |
199 ><TD | |
200 WIDTH="33%" | |
201 ALIGN="right" | |
202 VALIGN="top" | |
203 >SDL_mutexP</TD | |
204 ></TR | |
205 ></TABLE | |
206 ></DIV | |
207 ></BODY | |
208 ></HTML | |
209 > |